Croatia · Istria
Katoro - Hotel Koralj
Umag — Istria, Croatia
On the beach
Right now
Live conditions from Open-Meteo, refreshed hourly.
7-day outlook
7-day marine forecast from Open-Meteo.
Sea temperature
Next 7 days, °C
Wave height
Next 7 days, metres
View as table
| Day | Sea temp (°C) | Wave height (m) |
|---|---|---|
| Wed 2 | 27.5 | 0.1 |
| Thu 3 | 27.4 | 0.1 |
| Fri 4 | 27.5 | 0.0 |
| Sat 5 | 27.3 | 0.2 |
| Sun 6 | 27.7 | 0.1 |
| Mon 7 | 27.9 | 0.2 |
| Tue 8 | 28.2 | 0.2 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Excellent2015
- 2016: Excellent2016
- 2017: Excellent2017
- 2018: Excellent2018
- 2019: Excellent2019
- 2020: Excellent2020
- 2021: Excellent2021
- 2022: Excellent2022
- 2023: Excellent2023
- 2024: Excellent2024
- 2025: Excellent2025
Excellent in the most recent season, and 11 of 11 classified years rated Excellent or Good.
- Excellent
- Good
- Sufficient
- Poor
- Not classified
View as table
| Year | Classification |
|---|---|
| 2015 | Excellent |
| 2016 | Excellent |
| 2017 | Excellent |
| 2018 | Excellent |
| 2019 | Excellent |
| 2020 | Excellent |
| 2021 | Excellent |
| 2022 | Excellent |
| 2023 | Excellent |
| 2024 | Excellent |
| 2025 | Excellent |
Typical sea temperature by month
Modeled estimatePlausible seasonal climatology derived from latitude, for illustration — not a measured average.
Monthly sea temperature
Typical range across the year, °C
View as table
| Month | Typical sea temp (°C) |
|---|---|
| Jan | 14 |
| Feb | 14 |
| Mar | 15 |
| Apr | 17 |
| May | 20 |
| Jun | 23 |
| Jul | 25 |
| Aug | 26 |
| Sep | 25 |
| Oct | 23 |
| Nov | 20 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- Katoro - Velestrin191 mUmag, Istria
- Katoro - TN Polynesia, FKK618 mUmag, Istria
- Katoro - Hotel Aurora698 mUmag, Istria
- TN Stella Maris - Uvala Krapan953 mUmag, Istria
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- By car: there's parking about ~400 m from the beach.
Food, stays & town
- Nearest village: Katoro, about ~500 m away.
- 9 places to eat within 1 km Closest is beach bar, about ~230 m away.
- 1 place to stay mapped nearby Closest is Meliá Coral, about ~340 m away.
- 1 shop nearby, about ~350 m away
What kind of beach is this?
This beach belongs to a small coastal village. It's usually calmer than a resort or town beach, though a popular village spot can still fill up on the best summer days.
Estimated from OpenStreetMap surroundings data (ODbL).
- Families
- Water sports
Is the water clean at Katoro - Hotel Koralj?
Katoro - Hotel Koralj sits on a stretch of coast classed as a coastal bathing site, carrying an official EU Bathing Water rating of Excellent for the 2025 season. Under the EU Bathing Water Directive, national authorities test for intestinal enterococci and E. coli through the season and report the results the following spring — the 2025 rating was published in spring 2026, and 2026's won't follow until spring 2027. In addition to that yearly rating, some national authorities — for Croatia, IZOR (Croatia's Institute of Oceanography and Fisheries) — publish individual water sample results during the season itself, ahead of the annual report. It sits in Umag, Istria. You can park about ~400 m away.
Looking to avoid the busiest weeks? The water is typically warmest around August, with the most reliable swimming window running July–September; outside that stretch you'll find a cooler sea but a quieter beach. That rating has been consistent: every one of the 11 classified seasons on record has come back Excellent or Good. On site you'll find Lifeguard, Showers, and Toilets. Katoro — the closest town — sits about ~500 m from here.
“Excellent” is one point on a four-step scale — Excellent, Good, Sufficient or Poor — assigned once per year from that season's water samples, not a live reading. It describes how the site performs on average across the season, not the exact water quality this afternoon; for day-to-day sea conditions, see the “Right now” and 7-day outlook panels above. There are 9 places to eat within a kilometre — beach bar is the closest, about ~230 m away.
Frequently asked questions
Is the water at Katoro - Hotel Koralj safe right now?
Yes. Its official 2025 EU Bathing Water rating is Excellent, the top classification, and 11 of the 11 classified seasons on record have rated Excellent or Good. It's also held steady at Excellent for 11 straight years.
Is the sea warm at Katoro - Hotel Koralj today?
As of the latest update, the sea temperature at Katoro - Hotel Koralj is around 27°C — see the “Right now” panel above for live conditions. That's the reading right off Umag, Istria.
What's the best month to visit Katoro - Hotel Koralj for swimming?
The most reliable stretch for warm water runs through July–September, based on the modeled climatology. That applies to the water around Umag, Istria.
What's behind the water quality rating shown above?
National authorities sample the water for intestinal enterococci and E. coli bacteria through the bathing season and report the full-season results to the European Environment Agency each spring for the season just finished, which assigns one of four annual classifications — Excellent, Good, Sufficient or Poor — under the EU Bathing Water Directive. Some national authorities, including Croatia's IZOR, also publish individual in-season sample results ahead of that annual report.
How do I get to Katoro - Hotel Koralj without a car?
By car, there's parking about ~400 m from the beach. The nearest town is Katoro, about ~500 m away.